diff --git a/parm/config/gfs/config.resources.WCOSS2 b/parm/config/gfs/config.resources.WCOSS2
index 089fdeb24f..5927b82aed 100644
--- a/parm/config/gfs/config.resources.WCOSS2
+++ b/parm/config/gfs/config.resources.WCOSS2
@@ -5,6 +5,7 @@
 case ${step} in
   "prep")
     export is_exclusive=True
+    export memory_prep="480GB"
     ;;
 
   "anal")